You're actually making my point against magazine capacity there. Limiting magazine capacity reduces your ability to defend yourself from someone intent on doing harm. A law saying you can't have more than 10 rounds isn't going to stop a murderer from carrying 20 rounds. So all it does is prevent the law abiding citizen from having equal capacity.
My point was that it only takes 1 bullet to kill someone. So limiting to 10 rounds isn't going to prevent murder, or even mass murder since they could kill 10 people with a legal magazine. I'm certainly not saying 1 round is sufficient. Quite the opposite actually. So yes, I want more than 10 rounds to defend against that full auto AK.
We agree on this too (unless that was a poorly articulated opposition). Your body, your choice. Wear a mask, don't wear a mask, I won't judge you so you shouldn't judge me. Do what's right for you. I don't think the government should be regulating masks or vaccines. If a parent wants their kid to wear a mask in school, so be it. If not, so what.
That said. I've heard the CO2 arguments, but it's always by the same people who say masks don't work. What they're saying is that 3 atoms (1 carbon 2 oxygen) can't get through the mask but an airborne virus can. Airborne. As in, it's transmitted through the air we breathe? That air is comprised of roughly 80% nitrogen and 20% oxygen. So the argument is that carbon/oxygen can't get through effectively but nitrogen/oxygen gets through so easily that it's pointless to wear a mask at all. These arguments contradict each other.
Either air can get in and transport the virus, or air can't get out causing a buildup of CO2. Masks aren't a 1 way valve.